Title :
Phononics and Micromechanics of Bio-Colloidal Wiseana Iridovirus
Author :
Xiong, Huiming ; Hartschuh, Ryan D. ; Wargacki, Stephen P. ; Neiswinger, Johnathan ; Kisliuk, Alexander ; Sihn, Sangwook ; Ward, Vernon K. ; Vaia, Richard A. ; Sokolov, Alexei P.
Author_Institution :
Dept. of Polymer Sci., Univ. of Akron, Akron, OH
Abstract :
By using Brillouin light scattering (BLS), we have investigated phononic properties of Wiseana iridovirus (WIV) assemblies and dispersed individual viruses at hypersonic frequency window. Propagating modes in virus assemblies and localized vibrational eigenmodes of individual virus have been identified. Based on phonon spectra, Young´s modulus of the virus has been estimated to be ~ 7 GPa, suggesting that the WIV virions are mechanically more similar to their DNA cores than to their capsid (protein) shells. The results also indicate that viral colloids are mechanically coupled during assembly in contrast to a system of synthetic polymeric colloids.
Keywords :
Brillouin spectra; DNA; Young´s modulus; bio-optics; biomechanics; cellular biophysics; colloids; eigenvalues and eigenfunctions; micromechanics; microorganisms; molecular biophysics; phonons; proteins; Brillouin light scattering; DNA; Wiseana iridovirus; Young´s modulus; biocolloids; capsid shells; micromechanics; phonon spectra; phononics; propagating modes; protein; vibrational eigenmodes; viral colloids; viruses; Assembly; Brillouin scattering; DNA; Frequency; Light scattering; Optical propagation; Phonons; Proteins; Vibrations; Viruses (medical);
Conference_Titel :
Nanotechnology, 2008. NANO '08. 8th IEEE Conference on
Conference_Location :
Arlington, Texas
Print_ISBN :
978-1-4244-2103-9
Electronic_ISBN :
978-1-4244-2104-6
DOI :
10.1109/NANO.2008.193
